set interface INTERFACE_AX
set streams 4
set bandwidth BANDWIDTH_ADAPT
set vstaCount 1
set vstaConfig {{"interface_": "$interface", "txAtten": 0, "streams": $streams, "bandwidth": "$bandwidth"}}
set vstaConfig [subst -nocommands -nobackslashes $vstaConfig]
set vsta_array [lrepeat $vstaCount $vstaConfig]
set vsta_array [join $vsta_array ", "]
puts $vsta_array
c2V0IGludGVyZmFjZSBJTlRFUkZBQ0VfQVgKc2V0IHN0cmVhbXMgNApzZXQgYmFuZHdpZHRoIEJBTkRXSURUSF9BREFQVApzZXQgdnN0YUNvdW50IDEgICAKc2V0IHZzdGFDb25maWcge3siaW50ZXJmYWNlXyI6ICIkaW50ZXJmYWNlIiwgInR4QXR0ZW4iOiAwLCAic3RyZWFtcyI6ICRzdHJlYW1zLCAiYmFuZHdpZHRoIjogIiRiYW5kd2lkdGgifX0Kc2V0IHZzdGFDb25maWcgW3N1YnN0IC1ub2NvbW1hbmRzIC1ub2JhY2tzbGFzaGVzICR2c3RhQ29uZmlnXQpzZXQgdnN0YV9hcnJheSBbbHJlcGVhdCAkdnN0YUNvdW50ICR2c3RhQ29uZmlnXQpzZXQgdnN0YV9hcnJheSBbam9pbiAkdnN0YV9hcnJheSAiLCAiXQpwdXRzICR2c3RhX2FycmF5